Addresses
2,048
2.0K
Sub-ranges
11+
within this block
PTR Density
99.1%
2.0K of 2.0K IPs have PTR
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
74/100
Moderate
How this score is built
- Baseline (neutral) 65
- Has a reverse-DNS (PTR) record +5
- Enterprise allocation +4
- Trust score 74 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 204.228.128.0/21
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 204.228.132.0/22 | 1.0K | XMission, L.C. | AS6315 | US |
| 204.228.128.0/24 | 256 | XMission, L.C. | AS6315 | US |
| 204.228.131.0/24 | 256 | XMission, L.C. | AS6315 | US |
| 204.228.130.0/24 | 256 | XMission, L.C. | AS6315 | US |
| 204.228.129.0/24 | 256 | XMission, L.C. | AS6315 | US |
| 204.228.128.0/25 | 128 | XMission, L.C. | AS6315 | US |
| 204.228.128.128/25 | 128 | XMission, L.C. | AS6315 | US |
| 204.228.128.0/26 | 64 | XMission, L.C. | AS6315 | US |
| 204.228.128.64/26 | 64 | XMission, L.C. | AS6315 | US |
| 204.228.128.64/27 | 32 | XMission, L.C. | AS6315 | US |
| 204.228.128.96/27 | 32 | XMission, L.C. | AS6315 | US |
First 256 of 2,048 IP addresses in 204.228.128.0/21
204.228.128.0
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+ 1.8K more (range too large to list inline)
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 204.228.128.0/19.
Announced prefix
Origin AS
Announcement samples
9,323
Last seen
2026-07-24 00:48:20
Frequently Asked Questions
What is 204.228.128.0/21?
204.228.128.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 204.228.128.0 to 204.228.135.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 204.228.128.0/21 network?
The 204.228.128.0/21 range is allocated to XMission, L.C. and announced via AS6315 from United States.
Last updated: 2026-07-24 01:25:32 UTC
